Founded in 1873, Foster County is one of 53 counties in the state of North Dakota. The city of Carrington is the county seat. With FIPS code of 31, Foster County has a population of 3,364 and area of 635 square miles (1,645 km2).
List of all cities in Foster County, ND alphabetically
| City/Town | Postal Code | Area Code |
| Barlow, ND | 58421 | 701 |
| Bordulac, ND | 58421 | 701 |
| Carrington, ND | 58421 | 701 |
| Dover, ND | 58421 | 701 |
| Glenfield, ND | 58443 | 701 |
| Grace City, ND | 58445 | 701 |
| Juanita, ND | 58443 | 701 |
| McHenry, ND | 58464 | 701 |
| Melville, ND | 58421 | 701 |
| Rose Hill, ND | 58421 | 701 |